Abstract: Due to water scarcity and unreliable rainfall regimes, irrigation plays an important role in the production of food worldwide. Farmers’ willingness to pay, Scarcity and opportunity cost of water, as well as financing are key determinants of sustainability of irrigation in developing countries. There is little empirical evidence to show the consequences of irrigation water pricing based on direct survey of smallholder farmers’ WTP for irrigated maize production in Kenya. This paper thus evaluated farmers’ willingness to pay for irrigated maize production using cross sectional field data with the aim of establishing the value of water used in irrigated maize production.